关键词: 客车前轴；转向系统；运动学仿真；性能分析

Abstract: Taking the front axle steering system of a certain type of bus of our company as the research object, a three-dimensional digital model of the bus front axle steering system is first established. Then, a simulation model is built using ADAMS software for kinematic simulation analysis. According to the calculation results, the angle change curves of the front axle steering wheels of this type of bus when turning left or right can be obtained. Then, the angle comparison analysis is conducted based on Ackermann theory, and the pure rolling rate of the steering wheels is also obtained. Finally, the optimal solution is obtained through the optimization design of the steering trapezoid mechanism of this type of bus, effectively reducing the difference between the simulated steering angle and the theoretical steering angle. At the same time, it ensured the pure rolling rate of the steering wheels within a small steering angle range, providing suggestions for the design and matching of the axle, and effectively improving the steering performance of the vehicle model's steering system.

Key words: bus front axle; steering system; kinematics simulation; performance analysis